How do I make a old fashion boot jack?

It is made with small wood plank with a " v " grove cut out of center top and a piece of wood along under middle side to hold top off floor. You put your foot with boot in the "v" groove and hold the board down with your toe of other foot and just pull back on your booted foot and your blog comes off.

if you have a jigsaw and small piece of wood, make pattern from one you described and cut it out. only one small rectangle on bottom and cut out an U that gets wider at the end on the bigger piece , and cut that out and attach the small piece just under the bottom of the U/ very easy. I have made a couple.